Mask



FIG. 1 is a perspective view of a first embodiment of a mask showing my new design, in an assembled position;

FIG. 2 is a cross sectional view taken along line 2-2 in FIG. 3;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a rear view of FIG. 1;

FIG. 5 is a left side view of FIG. 1;

FIG. 6 is a right side view of FIG. 1;

FIG. 7 is a top plan view of FIG. 1;

FIG. 8 is a bottom plan view of FIG. 1;

FIG. 9 is an exploded perspective view of a second embodiment of a mask showing my new design, in an unassembled position;

FIG. 10 is a front view of FIG. 9;

FIG. 11 is a rear view of FIG. 9;

FIG. 12 is a right side view of FIG. 9;

FIG. 13 is a left side view of FIG. 9;

FIG. 14 is a top plan view of FIG. 9; and,

FIG. 15 is a bottom plan view of FIG. 9.

The broken line of the arrow in FIG. 3 forms no part of the claimed design. 

CLAIM The ornamental design for a mask, as shown and described. 